Extracting substrings at specified positions

How to extract substrings from a string at specified positions For e.g.: ‘ABCDEFGHI开发者_如何学PythonJKLM’. I have To extract the substring from 3 to 6 and 8 to 10.

Required output: DEFG, IJK

Thanks in advance.

Here you go

myString = 'ABCDEFGHIJKLM'
first = myString[3:7] # => DEFG
second = myString[8:11] # => IJK

In the slicing syntax, the first number is inclusive and the second is excluded.

You can read more about String slicing from python docs

Look into Python's concept called sequence slicing!

a = "ABCDEFGHIJKLM"
print a[3:7], a[8:11]

--> DEFG IJK

s = 'ABCDEFGHIJKLM'
print s[3:7]
print s[8:11]

>>> 'ABCDEFGHIJKLM'[3:7]
'DEFG'
>>> 'ABCDEFGHIJKLM'[8:11]
'IJK'

You might want to read a tutorial or beginners book.

In alternative you can use operator.itemgetter:

>>> import operator
>>> s = 'ABCDEFGHIJKLM'
>>> f = operator.itemgetter(3,4,5,6,7,8,9,10,11)
>>> f(s)
('D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L')